updated plugin ActivityPub version 8.3.0

wp-content/plugins/activitypub/includes/handler/class-reject.php

@@ -0,0 +1,107 @@
+<?php
+/**
+ * Reject handler file.
+ *
+ * @package Activitypub
+ */
+
+namespace Activitypub\Handler;
+
+use Activitypub\Collection\Following;
+use Activitypub\Collection\Outbox;
+use Activitypub\Collection\Remote_Actors;
+
+use function Activitypub\object_to_uri;
+
+/**
+ * Handle "Reject" requests.
+ */
+class Reject {
+	/**
+	 * Initialize the class, registering WordPress hooks.
+	 */
+	public static function init() {
+		\add_action( 'activitypub_inbox_reject', array( self::class, 'handle_reject' ), 10, 2 );
+		\add_filter( 'activitypub_validate_object', array( self::class, 'validate_object' ), 10, 3 );
+	}
+
+	/**
+	 * Handles "Reject" requests.
+	 *
+	 * @param array     $reject   The activity-object.
+	 * @param int|int[] $user_ids The user ID(s).
+	 */
+	public static function handle_reject( $reject, $user_ids ) {
+		// Validate that there is a preceding Activity.
+		$outbox_post = Outbox::get_by_guid( $reject['object']['id'] );
+
+		if ( \is_wp_error( $outbox_post ) ) {
+			return;
+		}
+
+		// We currently only support reject for Follow activities. But we will support more in the future.
+		switch ( \get_post_meta( $outbox_post->ID, '_activitypub_activity_type', true ) ) {
+			case 'Follow':
+				self::reject_follow( $reject, $user_ids );
+				break;
+			default:
+				break;
+		}
+	}
+
+	/**
+	 * Reject a "Follow" request.
+	 *
+	 * @param array     $reject   The activity-object.
+	 * @param int|int[] $user_ids The user ID(s).
+	 */
+	private static function reject_follow( $reject, $user_ids ) {
+		$actor_uri  = $reject['object']['actor'] ?? '';
+		$actor_post = Remote_Actors::get_by_uri( object_to_uri( $actor_uri ) );
+
+		if ( \is_wp_error( $actor_post ) ) {
+			return;
+		}
+
+		$user_id = is_array( $user_ids ) ? reset( $user_ids ) : $user_ids;
+		$result  = Following::reject( $actor_post, $user_id );
+		$success = ! \is_wp_error( $result );
+
+		/**
+		 * Fires after an ActivityPub Reject activity has been handled.
+		 *
+		 * @param array              $reject   The ActivityPub activity data.
+		 * @param int[]              $user_ids The local user IDs.
+		 * @param bool               $success  True on success, false otherwise.
+		 * @param \WP_Post|\WP_Error $result   Actor post on success, WP_Error on failure.
+		 */
+		\do_action( 'activitypub_handled_reject', $reject, (array) $user_ids, $success, $result );
+	}
+
+	/**
+	 * Validate the object.
+	 *
+	 * @param bool             $valid   The validation state.
+	 * @param string           $param   The object parameter.
+	 * @param \WP_REST_Request $request The request object.
+	 *
+	 * @return bool The validation state: true if valid, false if not.
+	 */
+	public static function validate_object( $valid, $param, $request ) {
+		$activity = $request->get_json_params();
+
+		if ( empty( $activity['type'] ) ) {
+			return false;
+		}
+
+		if ( 'Reject' !== $activity['type'] ) {
+			return $valid;
+		}
+
+		if ( ! isset( $activity['actor'], $activity['object'] ) ) {
+			return false;
+		}
+
+		return $valid;
+	}
+}